[U-Boot] [PATCH v2 3/4] board: am335x: Introduce scale_vcores
Lokesh Vutla
lokeshvutla at ti.com
Fri May 5 07:29:09 UTC 2017
Update voltages before programming plls.
Reviewed-by: Tom Rini <trini at konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
board/ti/am335x/board.c | 267 +++++++++++++++++++++++++++---------------------
1 file changed, 148 insertions(+), 119 deletions(-)
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c
index 6786229680..45c96cecaa 100644
--- a/board/ti/am335x/board.c
+++ b/board/ti/am335x/board.c
@@ -264,155 +264,184 @@ const struct dpll_params dpll_ddr_evm_sk = {
const struct dpll_params dpll_ddr_bone_black = {
400, OSC-1, 1, -1, -1, -1, -1};
-void am33xx_spl_board_init(void)
+const struct dpll_params *get_dpll_ddr_params(void)
{
- int mpu_vdd;
+ if (board_is_evm_sk())
+ return &dpll_ddr_evm_sk;
+ else if (board_is_bone_lt() || board_is_icev2())
+ return &dpll_ddr_bone_black;
+ else if (board_is_evm_15_or_later())
+ return &dpll_ddr_evm_sk;
+ else
+ return &dpll_ddr;
+}
- /* Get the frequency */
- dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev);
+static void scale_vcores_bone(int freq)
+{
+ int usb_cur_lim, mpu_vdd;
- if (board_is_bone() || board_is_bone_lt()) {
- /* BeagleBone PMIC Code */
- int usb_cur_lim;
+ /*
+ * Only perform PMIC configurations if board rev > A1
+ * on Beaglebone White
+ */
+ if (board_is_bone() && !strncmp(board_ti_get_rev(), "00A1", 4))
+ return;
- /*
- * Only perform PMIC configurations if board rev > A1
- * on Beaglebone White
- */
- if (board_is_bone() && !strncmp(board_ti_get_rev(), "00A1", 4))
- return;
+ if (i2c_probe(TPS65217_CHIP_PM))
+ return;
- if (i2c_probe(TPS65217_CHIP_PM))
+ /*
+ * On Beaglebone White we need to ensure we have AC power
+ * before increasing the frequency.
+ */
+ if (board_is_bone()) {
+ uchar pmic_status_reg;
+ if (tps65217_reg_read(TPS65217_STATUS,
+ &pmic_status_reg))
return;
-
- /*
- * On Beaglebone White we need to ensure we have AC power
- * before increasing the frequency.
- */
- if (board_is_bone()) {
- uchar pmic_status_reg;
- if (tps65217_reg_read(TPS65217_STATUS,
- &pmic_status_reg))
- return;
- if (!(pmic_status_reg & TPS65217_PWR_SRC_AC_BITMASK)) {
- puts("No AC power, disabling frequency switch\n");
- return;
- }
+ if (!(pmic_status_reg & TPS65217_PWR_SRC_AC_BITMASK)) {
+ puts("No AC power, switching to default OPP\n");
+ freq = MPUPLL_M_600;
}
+ }
- /*
- * Override what we have detected since we know if we have
- * a Beaglebone Black it supports 1GHz.
- */
- if (board_is_bone_lt())
- dpll_mpu_opp100.m = MPUPLL_M_1000;
-
- /*
- * Increase USB current limit to 1300mA or 1800mA and set
- * the MPU voltage controller as needed.
- */
- if (dpll_mpu_opp100.m == MPUPLL_M_1000) {
- usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
- mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
- } else {
- usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA;
- mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
- }
+ /*
+ * Override what we have detected since we know if we have
+ * a Beaglebone Black it supports 1GHz.
+ */
+ if (board_is_bone_lt())
+ freq = MPUPLL_M_1000;
- if (tps65217_reg_write(TPS65217_PROT_LEVEL_NONE,
- TPS65217_POWER_PATH,
- usb_cur_lim,
- TPS65217_USB_INPUT_CUR_LIMIT_MASK))
- puts("tps65217_reg_write failure\n");
+ if (freq == MPUPLL_M_1000) {
+ usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
+ mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
+ } else {
+ usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA;
+ mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
+ }
- /* Set DCDC3 (CORE) voltage to 1.125V */
- if (tps65217_voltage_update(TPS65217_DEFDCDC3,
- TPS65217_DCDC_VOLT_SEL_1125MV)) {
- puts("tps65217_voltage_update failure\n");
- return;
- }
+ switch (freq) {
+ case MPUPLL_M_1000:
+ mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV;
+ usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
+ break;
+ case MPUPLL_M_800:
+ mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV;
+ usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
+ break;
+ case MPUPLL_M_720:
+ mpu_vdd = TPS65217_DCDC_VOLT_SEL_1200MV;
+ usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA;
+ break;
+ case MPUPLL_M_600:
+ case MPUPLL_M_500:
+ case MPUPLL_M_300:
+ mpu_vdd = TPS65217_DCDC_VOLT_SEL_1100MV;
+ usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA;
+ break;
+ }
- /* Set CORE Frequencies to OPP100 */
- do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
+ if (tps65217_reg_write(TPS65217_PROT_LEVEL_NONE,
+ TPS65217_POWER_PATH,
+ usb_cur_lim,
+ TPS65217_USB_INPUT_CUR_LIMIT_MASK))
+ puts("tps65217_reg_write failure\n");
- /* Set DCDC2 (MPU) voltage */
- if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) {
- puts("tps65217_voltage_update failure\n");
- return;
- }
+ /* Set DCDC3 (CORE) voltage to 1.10V */
+ if (tps65217_voltage_update(TPS65217_DEFDCDC3,
+ TPS65217_DCDC_VOLT_SEL_1100MV)) {
+ puts("tps65217_voltage_update failure\n");
+ return;
+ }
- /*
- * Set LDO3, LDO4 output voltage to 3.3V for Beaglebone.
- * Set LDO3 to 1.8V and LDO4 to 3.3V for Beaglebone Black.
- */
- if (board_is_bone()) {
- if (tps65217_reg_write(TPS65217_PROT_LEVEL_2,
- TPS65217_DEFLS1,
- TPS65217_LDO_VOLTAGE_OUT_3_3,
- TPS65217_LDO_MASK))
- puts("tps65217_reg_write failure\n");
- } else {
- if (tps65217_reg_write(TPS65217_PROT_LEVEL_2,
- TPS65217_DEFLS1,
- TPS65217_LDO_VOLTAGE_OUT_1_8,
- TPS65217_LDO_MASK))
- puts("tps65217_reg_write failure\n");
- }
+ /* Set DCDC2 (MPU) voltage */
+ if (tps65217_voltage_update(TPS65217_DEFDCDC2, mpu_vdd)) {
+ puts("tps65217_voltage_update failure\n");
+ return;
+ }
+ /*
+ * Set LDO3, LDO4 output voltage to 3.3V for Beaglebone.
+ * Set LDO3 to 1.8V and LDO4 to 3.3V for Beaglebone Black.
+ */
+ if (board_is_bone()) {
if (tps65217_reg_write(TPS65217_PROT_LEVEL_2,
- TPS65217_DEFLS2,
+ TPS65217_DEFLS1,
TPS65217_LDO_VOLTAGE_OUT_3_3,
TPS65217_LDO_MASK))
puts("tps65217_reg_write failure\n");
} else {
- int sil_rev;
+ if (tps65217_reg_write(TPS65217_PROT_LEVEL_2,
+ TPS65217_DEFLS1,
+ TPS65217_LDO_VOLTAGE_OUT_1_8,
+ TPS65217_LDO_MASK))
+ puts("tps65217_reg_write failure\n");
+ }
- /*
- * The GP EVM, IDK and EVM SK use a TPS65910 PMIC. For all
- * MPU frequencies we support we use a CORE voltage of
- * 1.1375V. For MPU voltage we need to switch based on
- * the frequency we are running at.
- */
- if (i2c_probe(TPS65910_CTRL_I2C_ADDR))
- return;
+ if (tps65217_reg_write(TPS65217_PROT_LEVEL_2,
+ TPS65217_DEFLS2,
+ TPS65217_LDO_VOLTAGE_OUT_3_3,
+ TPS65217_LDO_MASK))
+ puts("tps65217_reg_write failure\n");
+}
- /*
- * Depending on MPU clock and PG we will need a different
- * VDD to drive at that speed.
- */
- sil_rev = readl(&cdev->deviceid) >> 28;
- mpu_vdd = am335x_get_tps65910_mpu_vdd(sil_rev,
- dpll_mpu_opp100.m);
+void scale_vcores_generic(int freq)
+{
+ int sil_rev, mpu_vdd;
- /* Tell the TPS65910 to use i2c */
- tps65910_set_i2c_control();
+ /*
+ * The GP EVM, IDK and EVM SK use a TPS65910 PMIC. For all
+ * MPU frequencies we support we use a CORE voltage of
+ * 1.10V. For MPU voltage we need to switch based on
+ * the frequency we are running at.
+ */
+ if (i2c_probe(TPS65910_CTRL_I2C_ADDR))
+ return;
- /* First update MPU voltage. */
- if (tps65910_voltage_update(MPU, mpu_vdd))
- return;
+ /*
+ * Depending on MPU clock and PG we will need a different
+ * VDD to drive at that speed.
+ */
+ sil_rev = readl(&cdev->deviceid) >> 28;
+ mpu_vdd = am335x_get_tps65910_mpu_vdd(sil_rev, freq);
- /* Second, update the CORE voltage. */
- if (tps65910_voltage_update(CORE, TPS65910_OP_REG_SEL_1_1_3))
- return;
+ /* Tell the TPS65910 to use i2c */
+ tps65910_set_i2c_control();
- /* Set CORE Frequencies to OPP100 */
- do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
- }
+ /* First update MPU voltage. */
+ if (tps65910_voltage_update(MPU, mpu_vdd))
+ return;
+
+ /* Second, update the CORE voltage. */
+ if (tps65910_voltage_update(CORE, TPS65910_OP_REG_SEL_1_1_0))
+ return;
- /* Set MPU Frequency to what we detected now that voltages are set */
- do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
}
-const struct dpll_params *get_dpll_ddr_params(void)
+void gpi2c_init(void)
{
- if (board_is_evm_sk())
- return &dpll_ddr_evm_sk;
- else if (board_is_bone_lt() || board_is_icev2())
- return &dpll_ddr_bone_black;
- else if (board_is_evm_15_or_later())
- return &dpll_ddr_evm_sk;
+ /* When needed to be invoked prior to BSS initialization */
+ static bool first_time = true;
+
+ if (first_time) {
+ enable_i2c0_pin_mux();
+ i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED,
+ CONFIG_SYS_OMAP24_I2C_SLAVE);
+ first_time = false;
+ }
+}
+
+void scale_vcores(void)
+{
+ int freq;
+
+ gpi2c_init();
+ freq = am335x_get_efuse_mpu_max_freq(cdev);
+
+ if (board_is_bone())
+ scale_vcores_bone(freq);
else
- return &dpll_ddr;
+ scale_vcores_generic(freq);
}
void set_uart_mux_conf(void)
--
2.11.0
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